A twin-screw vessel is easier to maneuver than a single-screw vessel because the twin-screw vessel __________.

Correct Answer: Option C — can turn without using her rudder

Twin-screw vessels offer superior maneuverability because the master can use differential thrust—running one engine ahead and the other astern—to rotate the vessel within its own length. This capability allows for precise heading changes without relying on water flow over the rudder, which is ineffective at low speeds.